<template>
    <div>
        <div class="search">
            <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
            <div class="search-content" ref="search" v-show="keyword">
                <ul>
                    <li class="search-item border-bottom"
                    v-for="item of list"
                    :key="item.id"
                    @click="handleCityClick(item.name)">{{item.name}}</li>
                    <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
                </ul>
            </div>
        </div>
    </div>
</template>
<script>
import Bscroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  computed: {
    hasNoData () {
      return !this.list.length
    }
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  }
}
</script>
<style lang="stylus" scoped>
@import '~styles/varibles.styl'
    .search
        height .72rem
        background: $bgColor
        padding:0 .1rem
        .search-input
            box-sizing border-box
            width 100%
            height .62rem
            padding: 0 .1rem
            line-height .62rem
            text-align center
            border-radius .06rem
            color:#666
        .search-content
            z-index:1
            overflow:hidden
            position:absolute
            top:1.58rem
            left:0
            right:0
            bottom:0
            background:#eee
            .search-item
                line-height: .62rem
                padding-left:.2rem
                color:#666
                background:#fff
</style>
